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Kingdom: Protists             Domain Eukarya                          Domain         Domain          Domain               ...
General characteristics    Classification criteria         eukaryotes         not animal, plant or fungi That’s more of...
AP Biology               eu                  gle                      no                         ids             din      ...
Problems with Protist Classification       Too Diverse!             doesn’t reflect any evolutionary relationship       ...
Theory of Endosymbiosis                                mitochondrion                       internal              aerobic  ...
Protist Diversity    The full spectrum of modes of life         from unicellular to multicellular         autotrophic t...
Mobility     How Protists move          flagellum          cilia          pseudopodAP Biology
Protist Diversity     Animal-like Protists            heterotrophs, predators              Amoeba              Paramec...
Protist Diversity     Plant-like Protists            autotrophs, photosynthesis              Euglena              alga...
Protist Diversity     Parasitic & pathogenic Protists          malaria         Plasmodium          Giardia          tr...
Protist Diversity     Beneficial & necessary Protists            phytoplankton              small algae + diatoms      ...
Any             Questions??AP Biology         2007-2008
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Chapter 28 - Protists

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  • African Sleeping Sickness and South American Chagas Disease
  • Transcript of "Chapter 28 - Protists"

    1. 1. Kingdom: Protists Domain Eukarya Domain Domain Domain Bacteria Archaea EukaryaAP Biology 2007-2008 Common ancestor
    2. 2. General characteristics  Classification criteria  eukaryotes  not animal, plant or fungi That’s more ofwhat they’re not & not what they are!AP Biology
    3. 3. AP Biology eu gle no ids din ofl & agel cil iat lates es Great Diversity bro & d wn a iat lga om e s red alg ae gre ena lga e mi sc ell an eo us ?
    4. 4. Problems with Protist Classification  Too Diverse!  doesn’t reflect any evolutionary relationship amongst all kingdom members paraphyletic )  ts an ho i lan ta da pl y d ll i ng des ph (in re ta la ge oa Fuclu to pi St phy ea s ria la al p oz o ha a of C ta en te m o at en an rc y ac or ni m l ph eo gl A A hl B ra Eu do lv St C A ho R Something’s not right here!AP Biology
    5. 5. Theory of Endosymbiosis mitochondrion internal aerobic membrane bacterium system Ancestral eukaryotic cell Eukaryotic cell with mitochondrion photosynthetic bacteriumchloroplast AP Biology Eukaryotic cell with chloroplasts Paramecium & symbiont Chlorella
    6. 6. Protist Diversity  The full spectrum of modes of life  from unicellular to multicellular  autotrophic to heterotrophic  asexual to sexual reproduction  pathogenic to beneficial  sessile to mobileAP Biology
    7. 7. Mobility  How Protists move  flagellum  cilia  pseudopodAP Biology
    8. 8. Protist Diversity  Animal-like Protists  heterotrophs, predators  Amoeba  Paramecium Paramecium with food vacuoles stained red  StentorAmoeba ingesting a ParameciumAP Biology
    9. 9. Protist Diversity  Plant-like Protists  autotrophs, photosynthesis  Euglena  algae  diatomsAP Biology
    10. 10. Protist Diversity  Parasitic & pathogenic Protists  malaria Plasmodium  Giardia  trypanosomes GiardiaAP Biology Trypanosoma
    11. 11. Protist Diversity  Beneficial & necessary Protists  phytoplankton  small algae + diatoms  much of the world’s photosynthesis  produces ~90% of atmospheric oxygen  zooplankton  heterotrophic protists + animals  key ecological role at base of marine food web Mmmmmm! Sounds like breakfast!AP Biology
    12. 12. Any Questions??AP Biology 2007-2008
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